Improvement



.N'. A. PATTERSON. GRAIN AND GRASS HARVBSTE'R.

No. 18,405; Patented 001: 1.3, 1857 ma "cams PETERS co, FHurmurnoq WASHINGTON. a. c.

UNITED STATES PATENT OFFICE.

IM P ROVEM ENT. IN HARV ESTERS.

Specification forming part of Letters Patent No. 18,405, dated October 13,1857.

To all whom it may concern:

Be it known that I, N. A. PATTERSON, of Kingston, in the county of Roane and State of Tennessee, have invented a new and useful Improvement in Grain and Grass Harvesters; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figurelis a longitudinal vertical section of my improvement, taken in the line a: a, Fig. 2. Fig. 2 is a plan or top view of the'same. Fig. 3 is a detached view of the device by which the double-tree is operated.

Similar letters of reference indicate correspondin g parts in the several figures.

This invention relates to a novel-means employed for guiding and turning the machine; and itconsistsin connecting the front or movabie axle with the double-tree in such a way that as said axle is turned the doubletrce will be simultaneously moved or shifted and the axle and doubletree have a proper relative iosition with each other, so that the power of theteam will be applied in the most direct or advantageous manner to the machine asthe same is guided or turned.

. The invention is applicable to that old and original class of machines'in whichthe team is attached back of the cutting device, so as to avoid side draft and also the trampling down of the standing grass or grain, and is designed to obviate the objection attending such machines, and which has hitherto prevented them being generally usedviz., the difficulty in guiding or turning the same and the general unwieldiness of the whole,-owing to the mannor in which the power was applied.

To enable those skilled iirthe art to fully understand and construct my invention, I will proceed to describe it.

A represents the frame of the machine.

B is the front and U is the back axle. The back axle is permanently attached to the frame A; but the front axle turns on a bolt, a, as is usual with all four-wheeled vehicles.

. To the back side of the front axle, B, and at its center, a horizontal bar or arm, I), is attached, and to the end of this arm there is attached a segment-rack, E.

F is the reach which connects the bolster G with the back axle, 0. To the under side of the reach there is attached a curved or segment block, b, which fits in a correspondingshaped. recess in the bar or arm 1), and serves as guide for the same. I

G is a shaft, which is placed longitudinally on the frame A, the front end of said shaft having its bearings 0 attached to the reach, and the back end having its bearing in the upper end of an upright, (I, attached to the back axle, O.

To the back endof the shaft G a handwheel, H, is attached, said wheel being directlyin front of the drivers seat I, which seat is placed on a platform, J, attached to the back axle, O.

On the front end of the shaftG apinion, K, is placed, and this pinion gears into the rack E. It will consequently be seen that by turning the shaftGr the front axle, B, may be turned so asto guide the machine either to the right or left.

' his the double-tree, to which the team is attached. The double-tree is attached by a link, 6, with a sliding bar, M, which is fitted between abar, N, attached to the reach F and the back axle, C. This-bar has the two ends of a rope or chain, 0, attached to it at oppo site ends, said rope or chaih passing around the shaft G and making several turns thereon.

From the above description of parts it will be seen that by turning the shaft G the axle B will not only be turned but the double-tree L will also be moved or shifted. For instance,

if the shaft G be turned from left to right, as

indicated by the red arrow, the axle B will be moved or-turned as indicated in red, and the double-tree L will be moved to the left, as also indicated in red; and if the shaft G be turned in a reverse direction, the axle and doubletree will be moved in reverse directions. 0 nsequently, whenever the machine is to be turned the team is moved toward the wheels having the greater circuit to pass over, and the power or draft is therefore applied where it is most needed-412., near said wheels-so as to act in the most direct manner in turn in g the machine. Were the double-tree a permanent fixture, as is usual, the team would not directly aid inturning the machine; but the machine, unless the team he guided by the driver, would hear or act upon the team, they being merely passive so far as the turning of the machine is concerned. Itwill therefore be seen that in all cases when a team is Connecting the axle B with the double-tree applied to harvesters behind the cutting de- L, substantially as and for the purpose set vice my improvement possesses a very appreforth.

ciable advantage. N. A. PATTERSON. 4 Having thus described my invention, what I Witnesses: claim as new, and desire to secure by Letters HENRY LIGGETT,

Patent, is J OHN GOODMAN. 

